DSH150 – 150mm Ducting Support Hangers w/Adhesive Velcro Strip – 50pc The Global Clamps Flexible Duct Support System (FDSS) ensures efficient operating for your ducted heating and cooling systems when installed correctly and in accordance with standards. FIRE SAFETY COMPLIANT Manufactured with the highest level fire retardant material on the market. Meets Australian Standard (Ductwork for air-handling systems in buildings) AS4254-1 Ensures Sag of less than 40mm between supports Manufactured with market-leading fire retardant material (V0 according to UL94 requirements) Reduces waste with supplied strap to be cut to length on site Double the required support width at 150mm making it the widest support system on the market Support slots designed to lock the straps in and assist parallel hanging preventing sliding or twisting No sharp edges to damage the duct fabric or material Provides contact to >25% of duct diameter up to 600mm